CN207728911U - A kind of wafer type centre-pivoted butterfly valve - Google Patents
A kind of wafer type centre-pivoted butterfly valve Download PDFInfo
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- CN207728911U CN207728911U CN201721901919.3U CN201721901919U CN207728911U CN 207728911 U CN207728911 U CN 207728911U CN 201721901919 U CN201721901919 U CN 201721901919U CN 207728911 U CN207728911 U CN 207728911U
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- valve rod
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- valve
- butterfly
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Abstract
The utility model provides a kind of wafer type centre-pivoted butterfly valve, including：Valve body, butterfly plate, upper valve rod, lower valve rod, seal assembly, sealing nut, handle, valve body be equipped with axially through butterfly plate through-hole, valve body upper end is equipped with the upper valve rod through-hole of the butterfly plate through-hole, valve body lower end is equipped with the lower valve rod through-hole of the butterfly plate through-hole, butterfly plate is disc, butterfly plate is accommodated in butterfly plate through-hole, upper valve rod is placed in upper valve rod through-hole, lower valve rod is placed in the lower valve rod through-hole, seal assembly includes gasket and the support ring that is placed between the gasket, seal assembly is set between valve body and butterfly plate, handle is connect with upper valve rod, sealing nut is set to the lower valve rod lower end, it is bolted in lower valve rod through-hole.The utility model is simple and reasonable, good leak-proof effect, and service life is high.
Description
Technical field
The utility model is related to valve technology field more particularly to a kind of wafer type centre-pivoted butterfly valves.
Background technology
Butterfly valve is mainly made of valve body, valve rod, butterfly plate etc., is rotated centered on valve rod by butterfly plate, is reached valve opening and closing
With the function of adjusting, cut-out and throttling action are mainly played on pipeline.Currently, centre-pivoted butterfly valve is used for realizing pipeline system as a kind of
Break-make of uniting and the component of flow control, obtain extremely wide application in many fields such as oil, chemical industry, metallurgy, water power.
Centre-pivoted butterfly valve is divided by connection type：Wafer type butterfly valve, flange form butterfly valve, lug type butterfly valve and welded type butterfly valve etc..Wherein,
Wafer type centre-pivoted butterfly valve has the advantages such as simple in structure, small, light-weight, and application is relatively broad, and seal form is flexible close
Two kinds of envelope and metal sealing.Elastic packing valve, sealing ring are generally embedded on valve body or are attached to butterfly plate periphery.
Wafer type centre-pivoted butterfly valve is primarily present problems on the market at present：
(1) it is provided with threaded hole on butterfly plate and valve rod, is mainly fixedly connected with butterfly plate with valve rod by taper pin, this connection
There is the risk of leakage in mode；
(2) butterfly valve and seal for pipe joints face contact area are small, and sealing effect is bad.
Utility model content
Technical problem to be solved in the utility model is：In view of the drawbacks of the prior art, a kind of good airproof performance is provided, is made
With the wafer type centre-pivoted butterfly valve of long lifespan.
To achieve the goals above, the utility model provides the following technical solutions：
A kind of wafer type centre-pivoted butterfly valve, including：Valve body, butterfly plate, upper valve rod, lower valve rod, seal assembly, sealing nut, hand
Handle, the valve body be equipped with axially through butterfly plate through-hole, the valve body upper end be equipped with the butterfly plate through-hole it is upper
Stem through-hole, the valve body lower end are equipped with the lower valve rod through-hole of the butterfly plate through-hole, and the butterfly plate is disc,
The butterfly plate is accommodated in the butterfly plate through-hole, and the upper valve rod is placed in the upper valve rod through-hole, and the lower valve rod is accommodating
In the lower valve rod through-hole, the seal assembly includes gasket and the support ring that is placed between the gasket, described close
Sealing assembly is set between the valve body and the butterfly plate, and the handle is connect with the upper valve rod, and the sealing nut is set to
The lower valve rod lower end, is bolted in lower valve rod through-hole.
Particularly, the butterfly plate be equipped with upper valve rod aperture corresponding with the upper valve rod through-hole and with the lower valve rod through-hole pair
The lower valve rod aperture answered.
Particularly, the upper valve rod lower end is square, and the lower valve rod upper end is square.
Particularly, the upper valve rod aperture is the square to match with the upper valve rod lower end, the lower valve rod aperture be with
The square that the lower valve rod upper end matches.
Particularly, it is equipped with annular convex platform around two openings of the valve body upper edge butterfly plate through-hole.
Particularly, the gasket coats the annular convex platform.
Particularly, the annular convex platform is equipped with groove.
Particularly, the gasket is equipped with the annular protrusion with annular convex platform groove match.
Particularly, there are three O-ring seals on the inside of the upper valve rod through-hole and the gasket of lower valve rod through hole.
The utility model is had the following technical effect that compared with prior art using above technical scheme：
(1) wafer type centre-pivoted butterfly valve provided by the utility model expands the sealing range of gasket, makes gasket packet
Part valve body end face is covered, to make the mounting surface of butterfly valve and pipeline increase, the expansion of mounting surface necessarily brings seal for pipe joints effect
Raising.
(2) wafer type centre-pivoted butterfly valve provided by the utility model, valve rod is with butterfly plate positioning using the four directions to match
Shape structure, it is more reasonable than common lateral taper pin structure, reduce the leak source of valve.
(3) wafer type centre-pivoted butterfly valve provided by the utility model uses split type upper lower valve stem structure, reduces butterfly plate
It is applied to the pressure of gasket when rotation, reduces gasket deformation, prolongs the service life.
Description of the drawings
Fig. 1 is the utility model section view；
Fig. 2 is the utility model side view；
Fig. 3 is the utility model valve body sectional view；
Fig. 4 is the utility model seal ring assembly schematic diagram；
Fig. 5 is the utility model butterfly plate schematic diagram；
Fig. 6 is the partial enlarged view of I in Fig. 3；
Fig. 7 is the partial enlarged view of II in Fig. 4；
Fig. 8 is the partial enlarged view of III in Fig. 4.
Attached drawing includes：Valve body 1, butterfly plate 2, upper valve rod 3, lower valve rod 4, seal assembly 5, sealing nut 6, handle 7, butterfly plate
Through-hole 11, upper valve rod through-hole 12, lower valve rod through-hole 13, annular convex platform 14, groove 15, upper valve rod aperture 21, lower valve rod aperture 22, sealing
Pad 51, support ring 52, annular protrusion 53, O-ring seal 54.
Specific implementation mode
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but not as the utility model
It limits.
As shown in Figure 1, a kind of wafer type centre-pivoted butterfly valve of preferred embodiment is provided, including：Valve body 1, butterfly plate 2, upper valve
Bar 3, lower valve rod 4 and seal assembly 5, valve rod use split type upper lower valve stem structure, the structure that can effectively reduce butterfly plate 2 and exist
It is applied to the pressure of seal assembly 5 when rotation, seal assembly 5 is avoided to deform, improves service life.
In addition be used as a kind of preferred embodiment, as shown in figure 3, valve body 1 be equipped with axially through butterfly plate through-hole 11, valve body
1 upper end is equipped with the longitudinally through upper valve rod through-hole 12 to butterfly plate through-hole 11, and 1 lower end of valve body is equipped with longitudinally through to butterfly plate through-hole 11
Lower valve rod through-hole 13, valve body 1 further includes the annular convex platform 14 having outside butterfly plate through-hole 11.
Further, as a kind of preferred embodiment, as shown in Fig. 2, wafer type centre-pivoted butterfly valve further includes：Sealing nut
6 and handle 7, handle 7 connect with upper valve rod 3, sealing nut 6 is set to 4 lower end of the lower valve rod, and sealing nut 6 is bolted in lower valve
Rod through-hole 13.
Further, as a kind of preferred embodiment, upper valve rod 3 is placed in upper valve rod through-hole 12, and lower valve rod 4 is accommodating
In lower valve rod through-hole 13.
Further, as a kind of preferred embodiment, as shown in figure 5, butterfly plate 2 is collar plate shape, butterfly plate 2 is accommodated in butterfly plate
In through-hole 11, butterfly plate 2 is equipped with upper valve rod aperture corresponding with upper valve rod through-hole 12 and lower valve corresponding with lower valve rod through-hole 13
Rod aperture 22.
Further, as a kind of preferred embodiment, 3 lower end of upper valve rod is square, and 4 upper end of lower valve rod is four directions
Shape, upper valve rod aperture 21 and the square of 3 lower end of upper valve rod match, the square phase of lower valve rod aperture 22 and 4 upper end of lower valve rod
Match, upper valve rod 3 and lower valve rod 4 use the tetragonal structure to match with the positioning of butterfly plate 2, reduce valve leak source.
Further, as a kind of preferred embodiment, as shown in Fig. 4,6,7,8, seal assembly 5 includes 51 He of gasket
The support ring 52 being placed between gasket 51, seal assembly 51 are set between valve body 1 and butterfly plate 2, and gasket 51 coats annular
Boss 14, gasket 51 are equipped with annular protrusion 53, and 14 outside of annular convex platform is recessed equipped with matching with gasket annular protrusion 53
Slot 15, seal assembly 5 and valve body 1 keep the installation of seal assembly 5 more secured, prevent by the way that the raised form with groove match is arranged
It is only cheap, three O-ring seals 54 are equipped at 51 inside of gasket and the matched inner wall of upper lower valve rod, can both enhance sealing and make
With, while wearability can also be improved.
Specific embodiment of the utility model is described in detail above, but it is only used as example, the utility model
It is not restricted to particular embodiments described above.To those skilled in the art, any that the practicality is equal
Modifications and substitutions are also all among the scope of the utility model.Therefore, the institute under the spirit and scope for not departing from the utility model
The impartial conversion of work and modification should all be covered in the scope of the utility model.
Claims (9)
1. a kind of wafer type centre-pivoted butterfly valve, which is characterized in that including：Valve body (1), butterfly plate (2), upper valve rod (3), lower valve rod (4),
Seal assembly (5), sealing nut (6), handle (7)；Wherein, the valve body (1) be equipped with axially through butterfly plate through-hole (11), institute
State the upper valve rod through-hole (12) that valve body (1) upper end is equipped with the butterfly plate through-hole (11)；Valve body (1) lower end is set
It is disc, the butterfly plate (2) to have the lower valve rod through-hole (13) of the butterfly plate through-hole (11), the butterfly plate (2)
It is accommodated in the butterfly plate through-hole (11), the upper valve rod (3) is placed in the upper valve rod through-hole (12), the lower valve rod
(4) it is placed in the lower valve rod through-hole (13)；The seal assembly (5) includes gasket (51) and is placed in the gasket
(51) support ring (52) between, the seal assembly (5) are set between the valve body (1) and the butterfly plate (2)；The handle
7 connect with the upper valve rod (3), and the sealing nut (6), which is set to the lower valve rod (4) lower end and is bolted in the lower valve rod, leads to
Hole (13).
2. wafer type centre-pivoted butterfly valve as described in claim 1, which is characterized in that the butterfly plate (2) is equipped with and the upper valve rod
The corresponding upper valve rod aperture (21) of through-hole (12) and lower valve rod aperture (22) corresponding with lower valve rod through-hole (13).
3. wafer type centre-pivoted butterfly valve as described in claim 1, which is characterized in that upper valve rod (3) lower end is square, institute
It is square to state lower valve rod (4) upper end.
4. wafer type centre-pivoted butterfly valve as claimed in claim 2, which is characterized in that the upper valve rod aperture (21) be and the upper valve
The square that bar (3) lower end matches, the lower valve rod aperture (22) are the square to match with the lower valve rod (4) upper end.
5. wafer type centre-pivoted butterfly valve as described in claim 1, which is characterized in that valve body (1) the upper edge butterfly plate through-hole (11)
It is equipped with annular convex platform (14) around two openings.
6. wafer type centre-pivoted butterfly valve as claimed in claim 5, which is characterized in that the gasket (51) coats the convex annular
Platform (14).
7. wafer type centre-pivoted butterfly valve as claimed in claim 5, which is characterized in that the annular convex platform (14) is equipped with groove
(15)。
8. wafer type centre-pivoted butterfly valve as claimed in claim 7, which is characterized in that the gasket (51) is equipped with and groove
(15) annular protrusion (53) to match.
9. wafer type centre-pivoted butterfly valve as described in claim 1, which is characterized in that the upper valve rod through-hole (12) and lower valve rod are logical
There are three O-ring seals (54) on the inside of gasket (51) at hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721901919.3U CN207728911U (en) | 2017-12-29 | 2017-12-29 | A kind of wafer type centre-pivoted butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721901919.3U CN207728911U (en) | 2017-12-29 | 2017-12-29 | A kind of wafer type centre-pivoted butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207728911U true CN207728911U (en) | 2018-08-14 |
Family
ID=63083936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721901919.3U Active CN207728911U (en) | 2017-12-29 | 2017-12-29 | A kind of wafer type centre-pivoted butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207728911U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074260A (en) * | 2021-03-23 | 2021-07-06 | 无锡美瑞克阀门制造有限公司 | Novel butterfly valve disk seat of high-efficient sealing |
-
2017
- 2017-12-29 CN CN201721901919.3U patent/CN207728911U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074260A (en) * | 2021-03-23 | 2021-07-06 | 无锡美瑞克阀门制造有限公司 | Novel butterfly valve disk seat of high-efficient sealing |
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